Pressure gauge



1924, Sept 30 v B. P. PRYOR, JR

PRES SURE GAUGE Filed Jan. 2, 1923 fof srtuiniy und Otherwise Servi T0 all' QU-0m il? may Cif/Wem Be ii', known than; L BRN :i ciieii 01 the ifiiiiied. fiitnvs, dem' iiaXwQii, county ,of iiisa, California, ham inveniaii a new zuid iiessuie Gauge. of which the ioliuw a Speciiicziion. iii'y ii'wen-iim i'eiaies in. :aimerai im 01.' iru'iimii ,i .2 '.Yfiiinrf ticuizii'iy to zi p1' for mfiziiy in comme iiimbig iiidicaging; the con iii' ing System by 5mi v has iii@ :oiioiungj -C is Prb ion foi' indicziiiig as any rlffupant of iii@ Vniiiii@ iii@ nuisible? of pounds of wie in ih iioiwfi iced li'ibrimiiion @i iii@ iiifio Second.: :i minimum ,i

may La that it. may be popuiar pfce;

Tiiiifi: To pi'oide a gauw-is which wiii curateiy deormiua :fusi iiifziuie iie pn@ sure 0f the forced lubricating gysem so tha. ii may be relied upon with every degree intended 'puipnss with the greatest 0i" eficic Cy.

The invention 'possesses niier features which will appear as the desci'ipion nox-w @msec-,cis with reference to iie ficcoinpmiying; fi'ziwing in which Figure 1 ifs :i 'View in sie 'aion of the gauge Simwiii tir; or fave, Figure 93 is a 's'riicai www secticn the line Q-Q, of ig'mo. Ti. ure 3 is cieizaii peispectiv vii i expansion mim; Figure is front elevation of the gauge, showing thi@ indicai'oi' :Fave removed; Figure 5 is a pian View che indicator or pointer and its associated paris showing the lsame as made from il. heap metal blank, Figure'f is i iront elevation of fha pointer, and Figure 7 :i fiet'aii View in siii@ eieviii-ion of the pointer or indicator afier assembling 'ii on the spindle Awhich caizis Referring new *e0 the iiiawing in dcii Ki ieplesens a suitable housinff'i'nade t6 re- ,ceive the annular B and Cfiivying Lim dass iens in iront of the indicator 'facs The ring B may'baweidefi o1: Othm- Wlse suitably secured.ii'heiwusmg The mi inw; iii"e;giiia,i' i mik im ben" 5mg aromi-ie.

i@ 'pointer (10).

hm the .l Wer part Iof the c cow ne: ai' (8) is :i spiiciie 'the foiwzwd l mf im'icamism iimviiy fixed lio thespindie, 1mi im ih@ other han/Ci it is nice to osciiiaiie ihereoim ibosi'ioned. iifihimi the inf'iicafor fac@ D iviiiin im housing is a pressure tub@ (i2) file Sam@ living :iinmxf scniieiifum' iu shape but including a bend (13), the end of which terminates so that the opening (14) (sce Figure 2) within the tube may communi.- cate with an opening (15) in the core block (1). This opening (15) in the core block (1) terminates at one end in :in enlargement (16), and is made to communicate with a tube leading from the source of pressure sup-ply. A tube may be threaded to the threaded end of the core block.

The opposite end (17) of the expansion tube (12) has a rack (18) the same extending beneath the spindle (9) so that the pinion (19) ot the pointer or indicator (10) may engage therewith. The said rack (1S) may be molded. in the adjacent end of said tube (12). This pinion (19) on the pointer or indicator is made by cori'ugatingin a suitable Way the blank (20) at one end of the pointer or indicator and bending the same up so as to leave a` circular design as best shown in Figure 6. To steady the pointer or indicator on the spindle (9) a second opening (21) is made behind the blank (20) `so that the same may receive the spindle (9).

In operation, when the'parts are assembled as described, Apressure supplied to the opening (15) in the core block (1) will be thus transmitted to the expansion tube (12),

.and upon expansion of the same the rack will actuate the pointer or indicator (l0), through its meshing engagement with the pinion (19), to swing the pointer'to the right in a clockwise direction so as to successively register with the graduated strip onthe indicator face D.

The-housing A may be produced in one operation if made of aluminum or other such material. Furthermore, the pointer or indicator (10) may be made in one operation which Will also include the blank for'the pinion (19) and the blanks for making up the openings for receiving the spindle (9). The rack (18) may also be made in one operation but it should be produced from suitable metal to allow a certain amount of flexibility sothat the teeth will snugly mesh with the pinion (19) to eliminate any play and also hold the pointer or indicator firmly on the spindle. These and other features, the most important of which have beeny described, make up a very compact, simple, and yet dependable and accurate device, and one that can be used with the greatest degree of satisfaction, and at the same time be sold at a popular price with a profit.

I claim: l

l. ln a pressure gauge, a housing, an expansion tube therein, means connecting said tube with a source of pressure supply, an indicator face on the housing including a graduated scale, a pointer co-aicting with said scale, a pinion fixed to the pointer,.and'

a rack connected to the expansion tube and meshing With said pinion, said connecting means comprising a core block having a bore adapted to open to the pressure supply, said expansion tube having one end secured to said block and communicating with said bore.

2. In a pressure gauge, a housing, a curved expansion tube therein, a core block in said housing, said block having a bore adapted to communicate with a pressure supply, one end of said tube being fixed to said block and communicating with said bore, the opposite end ot' the tube carrying a rack, an indicator face on the housing including a graduated scale, a spindle fixed.

in the housing, a pointer mounted thereon with its pointing end adapted to move across said graduated scale, and a pinicn connected to said pointer and meshing .h the rack on the end of the expansion tube substantially as and furthe purpose described.

3. A pressure vgauge as set forth in claim 2 and in which the-pointer and pinion are formed from a single sheet of material having a blank bent in circular form and provided With an annular series of identations providing teeth, portions respectively at the opposite sides of said blank having alined. a

perforations receiving said spindle, and a pointer extension forming a continuation of one of said portions.

4.1n a pressure gauge, a housing,v al

curved expansiontube therein, one end of saidtubehaving a connection with a source of pressure supply, the opposite end of the tube carrying a rack, an indicator face'on the housing including a graduated scale, a

spindle fixed in the housing, a pointer structure having a pair of spaced openings to receive said spindle und a pinion formed between said openings adapted to mesh with the rack on the end of the expansion tube, for moving the pointing end of the pointer across the graduated scale on the indicator face when the expansion tube is active, said pointer and pinion formed of a single blank of material having a part rolled in gear form and provided with spaced portions in which the aforesaid openings are formed.

5. A pressure gauge comprising a housing having a ,f igraduated dial and an oscillating pointer co-acting therewith, a core block fixed in the housing and provided with a bore adapted to communicate With a source of pressure supply, and an expansion tube fixed to the block and communieating with said bore and having a free end provided with a fixed rack bar, and a'gear (3o-.acting with said rack bar and said pointer to move the latter on actuations of said tube, i

BEN r. Peron., Lit'. 

